| Name | CVE-2025-26599 |
| Description | An access to an uninitialized pointer flaw was found in X.Org and Xwayland. The function compCheckRedirect() may fail if it cannot allocate the backing pixmap. In that case, compRedirectWindow() will return a BadAlloc error without validating the window tree marked just before, which leaves the validated data partly initialized and the use of an uninitialized pointer later. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1098906, 1098907 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| xorg-server (PTS) | bullseye | 2:1.20.11-1+deb11u13 | vulnerable |
| bullseye (security) | 2:1.20.11-1+deb11u14 | vulnerable | |
| bookworm, bookworm (security) | 2:21.1.7-3+deb12u8 | vulnerable | |
| sid, trixie | 2:21.1.15-3 | vulnerable | |
| xwayland (PTS) | bookworm | 2:22.1.9-1 | vulnerable |
| sid, trixie | 2:24.1.5-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| xorg-server | source | (unstable) | (unfixed) | 1098906 | ||
| xwayland | source | (unstable) | (unfixed) | 1098907 |
[bookworm] - xwayland <ignored> (Minor issue; Xwayland shouldn't be running as root)
https://lists.x.org/archives/xorg-announce/2025-February/003584.html
Fixed by: https://gitlab.freedesktop.org/xorg/xserver/-/commit/c1ff84bef2569b4ba4be59323cf575d1798ba9be
Fixed by: https://gitlab.freedesktop.org/xorg/xserver/-/commit/b07192a8bedb90b039dc0f70ae69daf047ff9598